From Sunday to Tuesday, the west and north coast will face exceptional high tides, called equinox tides. This time of year, when day and night have exactly the same length, the north and west of France prepare for spectacular high tides.
“When the moon and the sun work together, we have a big tide, a kind of very big wave. The waters will rise higher and fall lower,” says oceanographer Pierre Garreau. Normally, the coefficient of a classic high tide is around 90, while exceptional high tide, such as the expected one, “around 115”